An easy way to implement Windows SpeechRecognizer and SpeechSynthesizer UWP in your Win32 Apps. Available as DLL and as Static library, in both x64 and x86.

Your library functions are:

HRESULT __stdcall  SpeechX1(void* ptr, SpeechX2 x2, const wchar_t* langx = L"en-us", int Mode = 0);
HRESULT __stdcall  SpeechX3(const wchar_t* t, void* ptr, bool XML,size_t iVoice);

Call SpeechX3, passing the text and a vector to return the wave data. As the ptr paramter, pass a pointer to a std::vector<uint8_t>. Use MS Speech Synthesis Markup Language for XML https://docs.microsoft.com/en-us/azure/cognitive-services/speech-service/speech-synthesis-markup?tabs=csharp

The iVoice is the index-0 voice to use. To get all the voices, pass t = 0, then ptr as a pointer std::vector<std::tuplestd::wstring,std::wstring>>.

Mode = 2, pass a std::vector<std::tuplestd::wstring,std::wstring>> as a ptr to get all languages supported

std::vector<std::tuple<std::wstring, std::wstring>> sx;
SpeechX1((void*)&sx, 0, 0, 2);
for (auto& e : sx)
{
 std::wcout << std::get<0>(e) << L" - " << std::get<1>(e) << std::endl;
}

Continuous dictaction, Mode = 0 and the language specifier with a callback of this type:

HRESULT __stdcall  MyCallback(void* ptr, const wchar_t* reco, int conf);
SpeechX1(some_ptr, MyCallback, L"en-US", 0);

Where

• ptr is the value passed to SpeechX1 as some_ptr
• If reco is nullptr, then the recognizer is in idle state. Return S_OK to continue. If you return E_FAIL, session ends.
• If reco is text, then conf is the confidence mode:
• If -1, it's still in recognition mode
• If 0,1,2,3 high/medium/low/bad confidence

return S_OK to continue, E_FAIL to stop.